\begin{tabular}{@{}lccccccccc@{}}%
\toprule%
Eff. Spread&\multicolumn{3}{c}{L{-}En}&&\multicolumn{3}{c}{N{-}En}&&N vs. L\\%
\cmidrule{2%
-%
4}%
\cmidrule{6%
-%
8}%
\multicolumn{1}{c}{}&\multicolumn{1}{c}{H{-}L}&\multicolumn{1}{c}{t}&\multicolumn{1}{c}{SR}&\multicolumn{1}{c}{}&\multicolumn{1}{c}{H{-}L}&\multicolumn{1}{c}{t}&\multicolumn{1}{c}{SR}&\multicolumn{1}{c}{}&\multicolumn{1}{c}{}\\%
\midrule%
&&&&&&&&&\\%
&\multicolumn{8}{c}{No Transaction Costs}&\\%
\midrule%
$0\%$&$1.856$&$\footnotesize{(12.42)}$&$0.834$&&$2.541$&$\footnotesize{(11.29)}$&$1.090$&&***\\%
&&&&&&&&&\\%
&\multicolumn{8}{c}{Option Costs}&\\%
\midrule%
$25\%$&$0.827$&$\footnotesize{(7.52)}$&$0.418$&&$2.130$&$\footnotesize{(8.41)}$&$0.747$&&***\\%
$50\%$&$0.374$&$\footnotesize{(3.23)}$&$0.183$&&$1.646$&$\footnotesize{(6.19)}$&$0.539$&&***\\%
$75\%$&$0.092$&$\footnotesize{(0.74)}$&$0.044$&&$1.265$&$\footnotesize{(4.18)}$&$0.408$&&***\\%
$100\%$&$-0.170$&$\footnotesize{(-1.26)}$&$-0.078$&&$1.082$&$\footnotesize{(3.64)}$&$0.339$&&***\\%
&&&&&&&&&\\%
&\multicolumn{8}{c}{Option And Delta{-}Hedging Costs}&\\%
\midrule%
$25\%$&$0.743$&$\footnotesize{(6.89)}$&$0.381$&&$2.069$&$\footnotesize{(8.50)}$&$0.730$&&***\\%
$50\%$&$0.301$&$\footnotesize{(2.54)}$&$0.149$&&$1.403$&$\footnotesize{(6.80)}$&$0.487$&&***\\%
$75\%$&$-0.022$&$\footnotesize{(-0.17)}$&$-0.011$&&$0.951$&$\footnotesize{(4.62)}$&$0.334$&&***\\%
$100\%$&$-0.275$&$\footnotesize{(-1.87)}$&$-0.129$&&$0.654$&$\footnotesize{(3.19)}$&$0.238$&&***\\\bottomrule%
%
\end{tabular}